1 | ;;; poem-om.el --- poem implementation for Mule 1.* and Mule 2.* |
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2 | |
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3 | ;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc. |
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4 | |
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5 | ;; Author: MORIOKA Tomohiko <tomo@m17n.org> |
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6 | ;; Katsumi Yamaoka <yamaoka@jpl.org> |
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7 | ;; Keywords: emulation, compatibility, Mule |
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8 | |
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9 | ;; This file is part of APEL (A Portable Emacs Library). |
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10 | |
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11 | ;; This program is free software; you can redistribute it and/or |
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12 | ;; modify it under the terms of the GNU General Public License as |
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13 | ;; published by the Free Software Foundation; either version 2, or (at |
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14 | ;; your option) any later version. |
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15 | |
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16 | ;; This program is distributed in the hope that it will be useful, but |
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17 | ;; WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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19 | ;; General Public License for more details. |
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20 | |
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21 | ;; You should have received a copy of the GNU General Public License |
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22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
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23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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24 | ;; Boston, MA 02111-1307, USA. |
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25 | |
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26 | ;;; Code: |
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27 | |
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28 | (require 'poe) |
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29 | |
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30 | |
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31 | ;;; @ version specific features |
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32 | ;;; |
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33 | |
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34 | (if (= emacs-major-version 19) |
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35 | ;; Suggested by SASAKI Osamu <osamu@shuugr.bekkoame.or.jp> |
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36 | ;; (cf. [os2-emacs-ja:78]) |
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37 | (defun fontset-pixel-size (fontset) |
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38 | (let* ((font (get-font-info |
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39 | (aref (cdr (get-fontset-info fontset)) 0))) |
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40 | (open (aref font 4))) |
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41 | (if (= open 1) |
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42 | (aref font 5) |
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43 | (if (= open 0) |
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44 | (let ((pat (aref font 1))) |
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45 | (if (string-match "-[0-9]+-" pat) |
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46 | (string-to-number |
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47 | (substring |
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48 | pat (1+ (match-beginning 0)) (1- (match-end 0)))) |
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49 | 0)) |
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50 | )))) |
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51 | ) |
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52 | |
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53 | |
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54 | ;;; @ character set |
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55 | ;;; |
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56 | |
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57 | (defalias 'make-char 'make-character) |
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58 | |
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59 | (defalias 'find-non-ascii-charset-string 'find-charset-string) |
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60 | (defalias 'find-non-ascii-charset-region 'find-charset-region) |
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61 | |
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62 | (defalias 'charset-bytes 'char-bytes) |
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63 | (defalias 'charset-description 'char-description) |
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64 | (defalias 'charset-registry 'char-registry) |
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65 | (defalias 'charset-columns 'char-width) |
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66 | (defalias 'charset-direction 'char-direction) |
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67 | |
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68 | (defun charset-chars (charset) |
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69 | "Return the number of characters per dimension of CHARSET." |
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70 | (if (= (logand (nth 2 (character-set charset)) 1) 1) |
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71 | 96 |
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72 | 94)) |
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73 | |
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74 | |
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75 | ;;; @ buffer representation |
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76 | ;;; |
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77 | |
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78 | (defsubst-maybe set-buffer-multibyte (flag) |
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79 | "Set the multibyte flag of the current buffer to FLAG. |
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80 | If FLAG is t, this makes the buffer a multibyte buffer. |
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81 | If FLAG is nil, this makes the buffer a single-byte buffer. |
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82 | The buffer contents remain unchanged as a sequence of bytes |
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83 | but the contents viewed as characters do change. |
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84 | \[Emacs 20.3 emulating function]" |
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85 | (setq mc-flag flag) |
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86 | ) |
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87 | |
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88 | |
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89 | ;;; @ character |
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90 | ;;; |
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91 | |
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92 | (defalias 'char-charset 'char-leading-char) |
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93 | |
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94 | (defun split-char (character) |
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95 | "Return list of charset and one or two position-codes of CHARACTER." |
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96 | (let ((p (1- (char-bytes character))) |
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97 | dest) |
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98 | (while (>= p 1) |
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99 | (setq dest (cons (- (char-component character p) 128) dest) |
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100 | p (1- p))) |
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101 | (cons (char-charset character) dest))) |
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102 | |
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103 | (defmacro char-next-index (char index) |
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104 | "Return index of character succeeding CHAR whose index is INDEX." |
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105 | (` (+ (, index) (char-bytes (, char))))) |
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106 | |
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107 | |
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108 | ;;; @@ obsoleted aliases |
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109 | ;;; |
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110 | ;;; You should not use them. |
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111 | |
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112 | (defalias 'char-length 'char-bytes) |
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113 | ;;(defalias 'char-columns 'char-width) |
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114 | |
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115 | |
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116 | ;;; @ string |
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117 | ;;; |
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118 | |
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119 | (defalias 'string-columns 'string-width) |
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120 | |
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121 | (defalias 'string-to-int-list 'string-to-char-list) |
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122 | |
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123 | ;; Imported from Mule-2.3 |
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124 | (defun-maybe truncate-string (str width &optional start-column) |
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125 | "\ |
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126 | Truncate STR to fit in WIDTH columns. |
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127 | Optional non-nil arg START-COLUMN specifies the starting column. |
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128 | \[emu-mule.el; Mule 2.3 emulating function]" |
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129 | (or start-column |
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130 | (setq start-column 0)) |
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131 | (let ((max-width (string-width str)) |
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132 | (len (length str)) |
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133 | (from 0) |
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134 | (column 0) |
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135 | to-prev to ch) |
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136 | (if (>= width max-width) |
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137 | (setq width max-width)) |
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138 | (if (>= start-column width) |
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139 | "" |
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140 | (while (< column start-column) |
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141 | (setq ch (aref str from) |
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142 | column (+ column (char-width ch)) |
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143 | from (+ from (char-bytes ch)))) |
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144 | (if (< width max-width) |
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145 | (progn |
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146 | (setq to from) |
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147 | (while (<= column width) |
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148 | (setq ch (aref str to) |
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149 | column (+ column (char-width ch)) |
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150 | to-prev to |
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151 | to (+ to (char-bytes ch)))) |
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152 | (setq to to-prev))) |
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153 | (substring str from to)))) |
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154 | |
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155 | (defalias 'looking-at-as-unibyte 'looking-at) |
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156 | |
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157 | |
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158 | ;;; @ end |
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159 | ;;; |
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160 | |
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161 | (require 'product) |
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162 | (product-provide (provide 'poem-om) (require 'apel-ver)) |
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163 | |
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164 | ;;; poem-om.el ends here |
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